CN101264520A - A kind of production equipment and method of nano silver colloid - Google Patents

Abstract

The invention discloses a production equipment and method of nanometer silver colloid, in particular to a kind of equipment and method for producing nanometer silver colloid by combining the silver electrode-electric steady flow and reverse osmosis separation technology with a single-chip microcomputer to automatically monitor the concentration. The purpose of the present invention is to solve the problem that the concentration of nano-silver colloid produced directly by the known silver electrode-electrostatic flow method and the device is very low and there is no real-time concentration monitoring in the production. Based on the principles of low cost, high efficiency and environmental protection, it provides A device and method for producing nano-silver colloid with no compound residue and high concentration at normal temperature without waste discharge.

Description

A kind of production equipment and method of nano silver colloid

technical field

The invention relates to a production equipment and method of nano-silver colloid, in particular to a device and method for producing nano-silver colloid by combining silver electrode-electric steady flow and reverse osmosis separation technology with a single-chip microcomputer to automatically monitor the concentration.

Background technique

Due to its high-efficiency and broad-spectrum antibacterial and bactericidal effects, non-toxicity, no secondary pollution, and no drug resistance, nano-silver colloids have recently been gradually used in medical and health fields and places that require antibacterial and sterilizing, especially in advocating green environmental protection. Today its advantages are even more prominent.

Nano-silver colloid is a colloid that uses water as a dispersant and silver as a dispersant. It is mainly formed by suspending silver particles with a particle size of 1nm to 100nm in water under the action of water molecules. There are many ways to prepare nano-silver colloid, such as chemical deposition method, direct reduction method, microemulsion method, laser gas phase method, radiation chemical method, silver electrode-electric spark bombardment method, silver electrode-electric steady flow method, etc. These methods have their own advantages and disadvantages, and different methods can be used for different requirements and different application occasions. The silver electrode-electrostatic current method uses pure silver as an electrode, and disperses silver particles with a particle size of 1nm to 100nm into water through a stable current between the electrodes in pure water to prepare nano-silver colloids. The method of high-quality nano-silver colloid, the so-called high-quality means that the product is colorless and transparent, has no chemical residues, and the size of the dispersed silver particles is uniform. At present, this known method and device are as "electrolytic silver precipitation device" whose application number is 96103452.1 and publication number is CN1157338A in the Chinese patent publication data. And polarity conversion circuit, the pure silver electrode that timing circuit is connected, the concentration of actual this known method and device direct product is very low and production process does not have real-time concentration monitoring, so its product quality and production efficiency all can't be guaranteed, and these problems also Hinder the popularization and application of nano-silver colloid.

Contents of the invention

The purpose of the present invention is to solve the problem that the concentration of nano silver colloid produced directly by the known silver electrode-electrostatic flow method and the device is very low and there is no real-time concentration monitoring in the production. Based on the principle of low cost, high efficiency and environmental protection, it provides A device and method for producing nano-silver colloid with no compound residue and high concentration at normal temperature without waste discharge.

The purpose of the present invention is achieved through the following technical solutions:

A device and method for producing nano-silver colloids using a single-chip microcomputer to automatically monitor the concentration of a silver electrode-electric steady flow and reverse osmosis separation technology, which includes a single-chip microcomputer, firmware, a concentration sensor, and a liquid level sensor , a control system composed of a drive unit, a setting unit, a display unit, etc., and a silver electrode composed of a silver dispersion tank, a pure silver electrode, an electric steady current source, a solenoid valve, a stirrer, etc. And a reverse osmosis separation device composed of intermediate product-product tank, recovery tank, booster pump, reverse osmosis membrane module, solenoid valve, concentration proportional device, etc. It is characterized in that: the whole production process is monitored in real time by a control system mainly based on a single-chip microcomputer, especially when the control system monitors the liquid concentration in the silver dispersion tank through a concentration sensor, the silver electrode-electrical steady flow method of nano-silver The pure silver electrode in the colloid generating device separates silver particles with a particle size of 1nm to 100nm due to the joint action of water molecules and current and disperses them into water, thereby producing nano-silver colloids with a lower concentration, which are passed through another concentration sensor in the control system. Under the monitoring of the liquid concentration in the intermediate product-product tank, the nano-silver colloid with a higher concentration is produced after part of the water is separated by the reverse osmosis separation device, and the separated water is collected by the recovery tank and put into the silver electrode - The nano-silver colloid generated by the electric current method is reused in the device.

The present invention can reach following beneficial effect after adopting above-mentioned technical scheme:

It can realize the production of nano-silver colloid with high concentration and no chemical residue, and make the production process continuous, automatic, low energy consumption, high efficiency and no emission.

Description of drawings

Accompanying drawing 1 is the technological process and structural representation of preferred embodiment of the present invention.

Accompanying drawing 2 is the control system block diagram of preferred embodiment of the present invention.

Accompanying drawing 3 is the flow chart of the main program of the single-chip microcomputer of the preferred embodiment of the present invention.

Explanation of reference signs:

8, 11, 12, 26, 38 are solenoid valves (all normally closed), 1, 4, 6, 7, 9, 10, 14, 20, 23, 27, 28, 29, 34, 35, 36, 39 is a pipeline, 3, 5, 17, 22, 31, 32 are liquid level sensors, 18, 33 are concentration sensors, 15 is an electric steady current source, 19 is a wire, 21 is a pure silver electrode, 2 is a recovery tank, 16 Silver dispersion tank, 30 intermediate product-product tank, 13 stirrer, 37 booster pump, 25 reverse osmosis membrane module, 24 concentration ratio device, 40 container for finished product, 41 detection unit, 42 43 is a drive unit, 44 is an actuator, 45 is a setting unit, and 46 is a display unit.

T is the time for cleaning the reverse osmosis membrane module 25, D1 is the preset concentration of the liquid in the silver dispersion tank 16, and D2 is the preset concentration of the liquid in the intermediate product-product tank 30.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments.

With reference to Fig. 1, Fig. 2: the nano-silver colloid production equipment of preferred embodiment of the present invention comprises: single-chip microcomputer 42 (containing firmware) and with it the detection unit 41 (concentration sensor 18,33 and liquid level) that are connected with circuit Sensors 3, 5, 17, 22, 31, 32), drive unit 43, actuator 44 (solenoid valve 8, 11, 12, 26, 38, booster pump 37, agitator 13, electric steady current source 15 and its Pure silver electrode 21), setting unit 45 and display unit 46, also includes: silver dispersion tank 16, intermediate product-product tank 30, recovery tank 2, reverse osmosis membrane module 25, concentration ratio device 24, pipeline 1, 4, 6 , 7, 9, 10, 14, 20, 23, 27, 28, 29, 34, 35, 36, 39.

Concentration sensor 18, liquid level sensor 17, liquid level sensor 22, agitator 13 and pure silver electrode 21 connected with electric steady current source 15 by wire 19 are installed on silver dispersion tank 16; Silver dispersion tank 16 upper end passes pipeline 10. The solenoid valve 8 and the pipeline 9 are connected to the pure water source; the lower end of the silver dispersion tank 16 is connected to the upper end of the intermediate product-product tank 30 through the pipeline 23, the solenoid valve 26 and the pipeline 28.

A concentration sensor 33, a liquid level sensor 31, and a liquid level sensor 32 are installed on the intermediate product-product tank 30; the pipeline 36 passing through the lower end of the intermediate product-product tank 30 is connected to the inlet of the booster pump 37, and the outlet of the booster pump 37 passes through the pipeline 34 is connected with the inlet of the reverse osmosis membrane module 25, the concentrated liquid outlet of the reverse osmosis membrane module 25 is connected with the inlet of the concentration proportional device 24 through the pipeline 27, and the outlet of the concentration ratio device 24 is connected with the upper end of the intermediate product-product tank 30 through the pipeline 29, and the middle Product-the product tank 30 lower end is also connected with the container 40 upper end of adorned finished product by pipeline 35, solenoid valve 38 and pipeline 39.

A liquid level sensor 3 and a liquid level sensor 5 are installed on the recovery tank 2; the light liquid outlet of the reverse osmosis membrane module 25 is connected to the upper end of the recovery tank 2 through the pipeline 7 and the pipeline 1, and the lower end of the recovery tank 2 is passed through the pipeline 6, the solenoid valve 11 and The pipeline 14 is connected to the upper end of the silver dispersion tank 16, and the concentrated liquid outlet of the reverse osmosis membrane module 25 is also connected to the upper end of the recovery tank 2 through the pipeline 27, the pipeline 20, the solenoid valve 12, the pipeline 4 and the pipeline 1.

With reference to Fig. 2: in the control system of the preferred embodiment of the present invention, single-chip microcomputer 42 selects the eight single-chip microcomputer chips ATmega16 (L) that internal electric erasable program memory and analog/digital conversion are arranged for use, and its single-chip microcomputer 42 The input terminal is connected with the setting unit 45 through the circuit and is connected with the liquid level sensor (3,5,17,22,31,32) and the concentration sensor (18,33) of the detection unit 41 through the circuit; the single-chip microcomputer 42 The output terminal of the drive unit 43 is connected with the drive unit 43 through the circuit, and the electric steady current source 15, the booster pump 37, the agitator 13, the solenoid valve (8, 11, 12, 26, 38), and also connected to the display unit 46 through the circuit of the drive unit 43.

The setting unit 45 is composed of buttons, encoders or band switches and related electronic circuits, and is used to set the concentration setting parameters D1, D2 and so on.

The display unit 46 is composed of a liquid crystal display device or a digital display device and related electronic circuits, and is used to display the preset concentration, the instant concentration of the liquid in the silver dispersion tank 16, the intermediate product-product tank 30, and the working status of the equipment.

The drive unit 43 is composed of drive integrated devices, relays and related electronic circuits, and is used to amplify the output of the single-chip microcomputer 42 to drive the display unit and various execution devices to work.

For the sake of brevity, the above description does not include the shell, frame, pipe fittings and AC power supply, low-voltage DC power supply and its circuit connection, etc. of the equipment. These are the necessary conventional settings and methods of the examples of the present invention and belong to the general public knowledge. Related fields It is easy for technicians to implement, and details are not repeated here.

With reference to Fig. 1: the technological process of the nano-silver colloid production equipment of preferred embodiment of the present invention and method is as follows:

Set up D1 and D2 before the equipment starts to work (of course, D2>D1 is required). When the equipment starts to work, the silver dispersion tank 16 and the recovery tank 2 are empty, and the liquid level sensor 5 and the liquid level sensor 22 send signals. Electromagnetic valve 8 is opened under control, and pure water is injected into silver dispersing tank 16 through pipeline 9, electromagnetic valve 8, and pipeline 10. After the pure water in silver dispersing tank 16 is filled, a signal is sent by liquid level sensor 17, and electromagnetic valve 8 is closed. -the nano-silver colloid generating device of the electric steady current method starts working (the electric steady current source 15 energizes the pure silver electrode 21 by the wire 19, and the stirrer 13 starts to rotate simultaneously); The control system sends a signal, and when the concentration reaches the preset value D1, the nano-silver colloid generating device of the silver electrode-electric steady flow method stops working (the electric steady flow source 15 stops energizing the pure silver electrode 21, and the stirrer 13 stops rotating) , electromagnetic valve 26 is opened and puts the nano-silver colloid that concentration reaches D1 into intermediate product-product tank 30 by pipeline 23, electromagnetic valve 26, pipeline 28; The system detects whether there is liquid in the recovery tank 2 by the liquid level sensor 5, and if there is, the solenoid valve 11 is opened firstly, and the liquid in the recovery tank 2 starts to fill up the silver dispersion tank 16 through the pipeline 6, the solenoid valve 11 and the pipeline 14. And if the silver dispersion tank 16 has not been filled up or the liquid level sensor 5 detects that there is no liquid in the recovery tank 2 after the recovery tank 2 is emptied, then the control system makes the electromagnetic valve 8 open, and pure water passes through the pipeline 9, electromagnetic valve 8, The pipeline 10 fills up the silver dispersion tank 16; after the liquid in the silver dispersion tank 16 is filled up, the liquid level sensor 17 sends a signal to close the previously opened solenoid valve 8 or solenoid valve 11, and then the silver electrode-electric steady flow method The nano-silver colloid generating device starts working again (the electric steady current source 15 energizes the pure silver electrode 21 by the wire 19, and the stirrer 13 starts to rotate simultaneously).

After the nano-silver colloid that the concentration reaches D1 in the silver dispersion tank 16 is put into the intermediate product-product tank 30, a signal is sent by the liquid level sensor 31, and the booster pump 37 starts working. 37 and concentration proportional device 24 under the effect of the built pressure that concentration is that the nano-silver colloid of D1 is separated into concentration greater than the nano-silver colloid of D1 and water (in fact, concentration is less than the nano-silver colloid of the lower concentration of D1), and concentration is greater than D1 The nano-silver colloid flows into the intermediate product-product tank 30 through pipeline 27, concentration ratio device 24 and pipeline 29, and the separated water (in fact, the nano-silver colloid with lower concentration than D1) flows into recovery through pipeline 7,1 Slot 2. A concentration sensor 33 is housed in the intermediate product-product tank 30, and the control system detects the product concentration in the intermediate product-product tank 30 in real time by it. If the concentration does not reach D2, the booster pump 37 continues to work, and the concentration of the reverse osmosis membrane module 25 The nano-silver colloid with a concentration greater than D1 but less than D2 flowing out of the liquid outlet flows into the intermediate product-product tank 30 and is separated again. If the concentration reaches D2, the booster pump 37 stops working and the solenoid valve 38 opens to produce the product with a concentration of D2 Put into the container 40 of adorning the finished product, until the intermediate product-product tank 30 sends a signal by the liquid level sensor 32 when emptying, the solenoid valve 38 closes, then waits when the liquid concentration in the silver dispersion tank 16 reaches the preset value D1 again, the intermediate product- The product tank 30 is filled up again, the pressure pump 37 is turned on again after the sensor 31 sends a signal, and the above process is repeated.

Above each time when the intermediate product-product tank 30 is full, the sensor 31 sends a signal, and the control system preferentially controls the booster pump 37 and the solenoid valve 12 to open T minutes (5 to 15 minutes, the specific opening time should be based on the booster pump 37 Depending on the flow rate), the reverse osmosis membrane module 25 is cleaned by using the part of the liquid in the intermediate product-product tank 30, and the liquid discharged during cleaning (actually low-concentration nano-silver colloid) passes through the pipeline 27, the pipeline 20, and the solenoid valve 12 , Pipeline 4, and Pipeline 1 are discharged into recovery tank 2 to be reused.

The main program flow of the single-chip microcomputer for the above automatic control of the whole process is shown in Figure 3.

The examples of the present invention are only necessary descriptions for those skilled in the art to understand the present invention and are not intended to limit the protection scope of the patent of the present invention. Therefore, any changes that do not depart from the gist of the present invention and the changes made to the present invention are protected by the patent of the present invention. within range.

Claims (5)

1, a kind of production equipment of nano silver colloid and method, it is characterized in that: it is that a kind of silver electrode-electric current stabilization of monitoring concentration automatically with single chip microcomputer combines with the reverse osmosis isolation technics and produces the equipment and the method for nano silver colloid, and it comprises by single chip microcomputer, solidification software, concentration sensor, liquid level sensor, driver element, the unit is set, the control system that display unit etc. constitute and under this control system control by silver-colored dispersion slot, the fine silver electrode, the electricity constant-current source, magnetic valve, the nano silver colloid generating means of silver electrode-electric current stabilization method that agitator etc. constitute and by intermediate products-product groove, force (forcing) pump, the reverse osmosis membrane assembly, accumulator tank, magnetic valve, the reverse osmosis separator that concentration ratio device etc. constitute.

2, the production equipment and the method for nano silver colloid as claimed in claim 1 is characterized in that: in order to single chip microcomputer is that main control system is monitored the production overall process in real time, especially control system by concentration sensor to silver-colored dispersion slot under the monitoring of strength of fluid, the interior fine silver electrode of the nano silver colloid generating means of silver electrode-electric current stabilization method is isolated the silver particles of particle diameter 1nm～100nm owing to the acting in conjunction of hydrone and electric current and is distributed in the water, thereby produce the lower nano silver colloid of concentration, again control system by another concentration sensor to middle product-product groove under the monitoring of strength of fluid, after the reverse osmosis separator separates part water, promptly produce the higher nano silver colloid of concentration, and the separated water that falls is put into the nano silver colloid generating means of silver electrode-electric current stabilization method after collecting by accumulator tank and is reused.

3, the production equipment as claim 1, the described nano silver colloid of claim 2 is characterized in that with method: the fine silver electrode (21) that concentration sensor (18), liquid level sensor (17), liquid level sensor (22), agitator (13) is installed on silver-colored dispersion slot (16) and is connected with electric constant-current source (15) by lead (19); Silver dispersion slot (16) upper end is connected with pure water source by pipeline (10), magnetic valve (8), pipeline (9); Silver dispersion slot (16) lower end is connected with intermediate products-product groove (30) upper end by pipeline (23), magnetic valve (26) and pipeline (28).

4, production equipment and the method as claim 1, the described nano silver colloid of claim 2 is characterized in that: concentration sensor (33), liquid level sensor (31), liquid level sensor (32) are installed on intermediate products-product groove (30); The pipeline (36) that intermediate products-product groove (30) lower end is passed through is connected with force (forcing) pump (37) inlet, force (forcing) pump (37) outlet links to each other with reverse osmosis membrane assembly (25) inlet by pipeline (34), the dope body outlet of reverse osmosis membrane assembly (25) is connected with concentration ratio device (24) inlet by pipeline (27), concentration ratio device (24) outlet is connected with intermediate products-product groove (30) upper end by pipeline (29), and intermediate products-product groove (30) lower end also is connected with the container of dressing up product (40) upper end by pipeline (35), magnetic valve (38) and pipeline (39).

5, production equipment and the method as claim 1, the described nano silver colloid of claim 2 is characterized in that: liquid level sensor (3) and liquid level sensor (5) are housed on accumulator tank (2); The light liquid outlet of reverse osmosis membrane assembly (25) is connected with accumulator tank (2) upper end by pipeline (7), pipeline (1), accumulator tank (2) lower end is connected with silver-colored dispersion slot (16) upper end by pipeline (6), magnetic valve (11) and pipeline (14), and the dope body outlet of reverse osmosis membrane assembly (25) also is connected with accumulator tank (2) upper end by pipeline (27), pipeline (20), magnetic valve (12), pipeline (4) and pipeline (1).

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